DDK Glossary - G

GDT

Global descriptor table.

Global Descriptor Table (GDT)

A table that defines code and data segments available to all tasks in an application.

glyph

A graphic symbol whose appearance conveys information; for example, the vertical and horizontal arrows on cursor keys that indicate the directions in which they control cursor movement, the sunburst symbol on the screen illumination control of a display device.

GPI

Graphics programming interface

graphic primitive

In computer graphics, a basic element, such as an arc or a line, that is not made up of smaller parts and that is used to create diagrams and pictures.

graphics attributes

The attributes that apply to graphics primitives. Examples are color selection, line type, and shading pattern definition. Contrast with segment attributes.

Graphics programming interface (GPI)

The formally-defined programming language that lies between an IBM graphics program and the user of the program.

graphics segment

A sequence of related graphic primitives and graphics attributes. See also graphic primitive.

GRE

Graphics engine.